Electric griddle



FIG. 1 is a top front perspective view of an electric griddle according to our new design;

FIG. 2 is a bottom rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines in the drawings illustrate portions of the electric griddle that form no part of the claimed design. 

CLAIM The ornamental design for an electric griddle, as shown and described. 